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30, 1955 I G. DANIELS 7 Re. 24,055

I MULTIPLE PORT- VALVE oflginal'iiled Jan. 9, 1946 4 Sheets-Sheet 1INVENTOR.

30, 1955 I 1, ,G. DANIELS Re. 24

MULTIPLE PORT VALVE Original Filed Jan. 9, 1946 '4 Sheets-Sheet 2INVENTOR.

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L. G. DANIELS MULTIPLE PORT VALVE Aug. 30, 1955 4 Sheets-Sheet 3Original Filed Jan. 9, 1946 INI EN TOR. .7. 0M

BY 7mm 'y/wakg Aug. 30, 1955 G. DANIELS r MULTIPLE PORT VALVE 4Sheets-8heet 4 Original Filed Jan. 9, 1946 Re. 24,055 I Reissuerl Aug.30, 1955 United States Paten'tOflice MULTIPLE PORT VALVE Lee G.Daniels,'Rocltford, 11].

Original No. 2,605,992, dated August 5, 1952, Serial No. 639,920,January 9, 1946. Application for reissue October 28, 1954, Serial No.465,768

11 Claims. (Cl. 21o 24 Matter enclosed in heavy brackets appears in theoriginal patent but forms no part of this reissue specification; matterprinted in italics indicates the additions made by reissue. I

This invention pertains generally to valves, and more particularly tomulti-port valves of the rotary plate type, some features of theinvention being capable of embodiment in either a plain rotary valve ora lift-turn valve. Broadly speaking, the novel features hereinafterdisclosed constitute improvements upon my prior Patent No. 2,364,697,issued December 12, 1944.

Valves of this character, when employed as the control valve for watersofteners, and particularly in large commerical softeners, are arrangedto deliver the brine or other regenerating reagent over and in proximityto the bed of zeolite. For purposes of brine economy it is desirable todeliver to the head chamber just above the zeolite a brine flowsimultaneously with a water fiow thereto and above the level of thedelivered brine, so the flow of water will induce an immediate down flowof the brine into the bed without stagnation of the brine in the top ofsuch chamber.

An important feature of my invention resides in the provision of a novelstructural arrangement of the valve, whereby the above indicated resultmay be effectively accomplished.

Another object of the invention is the provision of a novel portarrangement permitting the over-all dimensions of the valve to besmaller and yet give improved flow characteristics.

Another object is to reduce the cost of manufacture of valves of thischaracter through the provision of a valve structure in which aplurality of different valves may be made from the same patterns.

Other purposes and advantages of my invention will be readilyappreciated as the same becomes better understood by reference to thefollowing description when considered in connection with theaccompanying drawings.

Referring to the drawings:

Figure l is a plan view of a valve embodying the principles of myinvention;

Fig. 2 is a vertical sectional view on a median line 2-2 through thevalve of Figure 1;

Fig. 3 is a plan view of one form of the valve plate shown in Fig. 2;

Fig. 4 is a similar view of a modified valve plate;

Fig. 5 is a fragmentary view of a modified form of cover for use withthe valve plate of Fig. 4;

Fig. 6 is a fragmentary sectional view through the false port of thebody;

Fig. 7 is a plan view of the valve body;

Fig. 3 is a 'fragmental sectional view on the line 8-8 of Fig. 7; I

Fig. 9 is a view similar to Fig. 7 of a valve body with the plug of thefalse port removed and replaced by a bushing, and

Fig. 10 is a plan view of the valve plate designed for sists primarilyof a ported body or stator adapted toibe connected with the variouspipes or conduits of a water treating system and a ported rotor or valveplate having a fiat face arranged in confronting relation to the.faceofthe body. The valve plate is designed and constructed to cooperate withthe body ina plurality-of operative positions to produce various desiredfluid flows through the system. The body, stator or base indicatedgenerally by reference character 11 (Figs. 2 and.-7) is generally. madeof cast metal and shaped to provide a plurality of chambers, inthepresent instance five, comprising a top chamber 12, a side chamber 13, abottom chamber 14,;a side chamber 15, and an injector chamber26, thechambers having tapped openings 16, .17, 18, 19 and 65, for pipeconnections, adapted to receive and be connected to the various fluidconducting pipes or conduits of the system. The face of the body isprovided with'port locations having ports communicating with saidchambers, as indicated by reference characters 21, 22, 23, 24, and25,'respectively. These ports 21 to 25 are all formed on an equal radiusfrom a common center on the face of the body, and each port isspaced orarranged 60 from the adjacent or nearest port. 1

In addition, the body is provided with a'chamberor connection 59 incommunication with chamber 26, and the body also has a port locationwhich will be termed a false port 27, which in the form of body shown inFig. 7 does not provide an opening to establish communication with thechamber 13, but affords an area of contact or support for the rotor atthis point to insure uniformity in balance and which, when the plate isin seated relation with the body, closes certain ports in the transferpassage 39 of the plate in different operative p sitions [position]thereof.

Each of ports 21 to 25, inclusive, is formed by an upwardly projectingthifnble or bushing or ferrule 28 which is threaded into or has a drivefit with the body so as to 7 a seal around each port.

The false port27 consists of a plug 31 surrounded by one of the gasketrings 29. The plug, as shown in' Fig. 6, is threaded into a tappedopening in the body. in order that the same body may be employed insystems where port 27 would be either a false port as here exemplifiedor an open port as shown in Fig. 9, the threaded portion of plug 31 andthe tapped opening in the body into which it is threaded may be the samesize as the other ports and thimbles, to provide an open portcommunicating with chamber 13 when the plug is removed and a bushing nrferrule such as 28 screwed therein.

In addition to the ports above described, the body may be provided witha central inlet 30 for raw or hard water. If preferred, however, suchwater may be admitted to the valve, cover above the plate through asuitable port in the cover to be later described.

The valve plate, stem plate or-rotor'adapted for use with the body abovedescribed? maybe of the design illust'rated in Fig. 3, whichshu'ts' offflow-of fluid "to service during the regeneration of a watertreatment'flap'paratus to which the valve is connected, or it maybe ofthe design exemplified in the embodiment of Fig. 4 which adapted todeliver untreated water to service duringfthe regeneration of thetreatment apparatus. Theonly difference in the two plates is that theplate of Fig. 4, designed "t'o filrnish untreated water to serviceduring the regeneration periods. is provided with an additional port.The plate of Fig. 3

may be converted into that of Fig. 4 by-simply drilling or v 3 boringanother port through the plate, as will be later explained.

Referring to- Fig. 3, it will be observed that the plate indicatedgenerally by reference character 32 (Figs. 2 and 3) is of a plate ordisk-like construction having a flat lower seating face and radial andcircumferential reinforcing ribs 33 and 34, respectively, on its upperface. A supply port or an open through port 35 extending completelythrough the plate and return ports 36, 37, and 38 are concentricallyarranged on equal radii from the center of the valve plate to align orregister with the similarly arranged ports of the body. Open ports 36,37, and 38 extend into a transfer passage 39 formed by an upwardlyprojecting hollow portion 41 of the cast plate. On each side of throughport 35 there is a blind portion comprising the flat face of the plate.

The valve plate of the species shown in Fig. 4 is identical in allrespects with that of Fig. 3, except that an additional open throughport 42 extending completely through the valve plate and spaced sixtydegrees from the adjacent port 35 is provided, and, like Fig. 3 has ablind portion located between ports and 36. The valve plates may a bemanufactured in thetwo types disclosed in Figs. 3 and 4 and usedinterchangeably to meet the requirements of particular installations.For instance, for use in a water softening system in which delivery ofhard water to service during the regeneration period is undesirable, theplate of Fig. 3 would be employed. On the other hand, for installationsrequiring delivery of hard water to service during the regenerationperiod of the softener, the plate of Fig. 4 with the port 42 would meetthe requirements. It will thus be seen that the plates are made from thesame patterns and castings, the port arrangement being such as toproduce the required flows by simple changes in the plate to provide thedifferent species of plates. The valve bodies are the same-namely thatshown in Fig. 7.

The plate, irrespective of type, is fixedly mounted upon a stem 43, thelower end of which is journaled in a yoke 44 carried by and extendingupwardly from the upper end of a bushing or sleeve 45 (Fig. 2) threadedinto or otherwise anchored in the central inlet- 30 of the stator. Thestem 43 is also journaled above the plate in a bearing 46 depending fromthe cover, cap or bonnet 47 inwhich the plate is enclosed or housed,this cover being secured to the body by bolts 48 (Figure 1), a gasketv49 being clamped between the body and the cover to preclude leakage.Leakage around the stem 43 is precluded by suitable packing 51compressed around the stem by a packing nut 52.

The upper end of stem 43 is connected by a pin 53 with an operatinghandle 54 provided at its inner end with a downwardly projecting toe 55adapted to ride upon the smooth upper or flat surface of the coverduring operative movements of the plate. A coiled expansion spring 56interposed between the plate and an annular shoulder carried by thecover 47 urges the plate toward the body and normally holds the plate insealing engagement with the sealing rings 29 surrounding the body ports.

To move the valve plate from one operative position to another for thepurpose of effecting a change and establiahing a desired or differentfluid flow through the system, the lever 54 is first raised or liftedupwardly, whereupon 'which the notches are milled therein.

cooperates with the body of Fig. 7 and the cover of Figure l, the coverof Figure 1 having notches A, B and C for reception of the latch 57 tolocate the plate in the required positions. The plate of Fig. 4cooperates with the body of. Fig. 7 and the cover of Fig. 5, the latterbeing identical with the cover of Figs. l and 2 except for the notches,this form having a notch D defining the backwash position'of thetvalveat 240 degrees from the notch A instead of 180 degrees as in Figs. 1 and2. The covers [cover] of Fig. 1 and Fig. 5 are of course both made fromthe same pattern, the only dilference being in the points at Alternatelyone cover may be made and the notches not to be used may be closed by aplug or filler.

Adjacent the .port 25 the body 11 is shaped to provide the chamber 26with which port 25 communicates and also a reagent chamber. orconnection 59 beneath the chamber 26 separated therefrom by a wall 61 inwhich is mounted a nozzle 62. An injector [A] tube 63 disposed inalignment with the nozzle 62 establishes communication between thechamber 59 and a tapped con-- nection 64 to which a pipe leading to andextending into the head chamber of the zeolite tank just above themineral bed is'connected. A tapped connection 65 leadmg from chamber 59is adapted to be connected with a pipe or conduit leading from a reagentsupply tank. A passage 66 leading from chamber 26 is connected withchamber 12, the pipe connection of which leads to the head space of thezeolite tank, the passage being adapted to deliver water to the headspace above the plane of dehvery of the reagent thereto to thereby causethe reagent to flow downwardly through the zeolite bed and prevent itsaccumulation in the chamber. This construction reslusletds in economy inthe amount of reagent and water Assuming that a water softening systemin which hard water is not to be delivered to service duringregeneratton, has been installed and equipped with a control valveembodying a plate of the type shown in Fig. 3 and cover as shown inFigs. 1 and 2, the various fluid flows requtred by such a system will beattained by manipulatton of the valve in the following manner. Startingwith the softening position of the valve as shown in Figs. 1 and 2,water will enter the interior of the cover through the central inlet 30or through a pipe connected to deliver into the cover 47. From theinterior of the cover the the toe 55 acts as a fulcrum to lift the stem43 and the valve plate which is fixed thereto up and free from thesealing rings of the body and is then turned to turn the valve plate.The handle is turned about the stem 43 as an axis, so as to align therequisite ports and blind portion or portions of the valve plate withcertain of the body ports in preselected positions to establish thedesired fluid flows.

To prevent accidental shifting or turning of the valve plate when inseated relation to the body, the handle is equipped with a dependinglatch 57 adapted to be engaged in any one of a series of notches orslots with which it may be aligned and into which it will be urged bythe spring 56 upon seating of the plate. The plate of Fig. 3

flow will be through open plate port 35, body port 21, top chamber 12,to the top of the softening tank, and return from the softening tankthrough bottom chamber 14, body port 23, plate port 37, transfer passage39, plate port 38, body port 24, and side chamber 15, to service. Theblind portions of the plate close body ports 22 and 2.5 [23], and thefalse port 27 of the body closes port 36.

When backwash becomes necessary, the handle 54 will be lifted to freethe catch from the notch A and disengage the plate from the body,whereupon the handle will be turned 180 viewing Figure 1 to align thelatch with the notch B and permit the rcseating of the plate upon thebody under influence of spring 56. The flow will now be from theinterior of the cover through plate port 35, body port 23, bottomchamber 14, to the bottom of the softening tank, and return from the topof the softening tank through top chamber 12, body port 21, plate port37, transfer passage 39, plate port 38, body port 22 and side chamber 13to drain or waste. One blind portion closes body port 24 and theotherblind portion seats over false port 27 of the body. Since plate port 36,in this position of the plate, registers with body port 25, there mayalso be a small but minor flow from the top chamber 12 through thepassage 66 and the ports 25 and 36 into transfer passage 39. Thisflowjoins the main stream in the transfer passage and passes to drainthrough ports as and 22.

At the conclusion of the backwash, the handle is lifted and turned in aclockwise direction through to engage the latch 57 in the notch C,whereupon the flow will be from the interior of the cover through openthrough plate port 35, body port 25, chamber 26, nozzle 62, chamber 59,and tube 63 to connection 64, thence to the head space of the softeningtank. Brine will be drawn into the connection or chamber 59 through theconnection 65 by the injector action of the nozzle 62 and tube 63, andwater also will flow from chamber 26 through passage 66 into top chamber12, and thence through connection 16 to the top of the head space abovethe. reagent delivery thereto. From the bottom of the softening tank thereturn flow is through bottom chamber 14, body port 23, plate port 38,transfer passage 39, plate port 36 and body 22 through side chamber 13to drain. The blind portions of the plate close body ports 21 and 24.After the brine flow has been shut off by a brine flow termination valveand the water flow has continued until the brine rinse has beencompleted, the valve is lifted and turned 60 further in a clockwisedirection to return it to normal softening position with the latchengaged in the notch A.

When a plate 32 having an open port 42 is employed, such as the plate 32of Fig. 4 and cover of Fig. 5, continuous delivery of water to servicein all positions of the valve will be furnished and the various flowswill be as follows. With the handle in softening position, as it is whenlatch 57 [17] is engaged in notch A, the nor mal flow through thesoftening tank will be the same as that obtained when the plr e of "ig.3 is employed. The blind portion of the plate closes body port 22 andthe false port 27 of the body closes the port 36. Of course, there willbe, in addition to the softening flow previously described, a flow ofwater through plate port 42, port 25 to chamber 26, passage 66 andconnection 64, but since at such time the reagent flow is shut off andthe flows through passage 66 and connection 64 both go to the head spaceat the top of the softening tank, the effective flow is the same as ifall of the water passed throughbody port 21.

For backwashing, the handle is lifted and turned in a clockwisedirection, viewing Figs. 1 and 5, through an arc of 240 to carry thelatch 57 into alignment with.

notch D (Fig. 5). This disposes port 35 in alignment with port 24 todeliver hard water to service during backwashing, while port 42 isaligned with port 23 for the delivery of water to the bottom of the tankfor backwashing. Upon return the backwash water is discharged throughbody port 21, plate port 36, transfer passage 39, plate port 37, bodyport 22 and chamber 13 to drain. The blind portion of the plate closesthe body port 25.

For brining and brine rinse the plate is moved clockwise 60' to alignthe latch or catch 57 with notch C, thereby bringing plate port 42 intoalignment with body port 24 to continue the delivery of hard water toservice, while plate port 35 becomes aligned with body port 25 todeliver water to the head space of the tank and draw reagent from thesupply tank into the chamber 59 to the tank at a point above the mineralbed. The blind portion of the plate closes body port 21 and the falseport 27 of the body closes the passage port 37. When rinsing is completeas described in connection with Fig. 3, the plate is moved throughanother 60 to the service position.

It will be apparent, therefore, that the employment of a plate havingthe open port 42 provides a continuous supply of hard water to servicewhile the regeneration steps of backwashing, brining, and rinsing arebeing carried out. With the type of body disclosed in Fig. 7 having afalse port 27, no flow through this port occurs and the gasket ring 29serves to close a port in the transfer passage in various operativepositions of the valve plate.

In the form of the invention shown in Figs. 9 and the body 11 isidentical with that of Fig. 7 except that the false port 27 is opened byremoval of the plug 31, becomes open port 68 and communicates with thedrain or Fig. 10, having but three ports, namely through port 35,

ports 69 and 71, and having three blind portions, one on each side ofthrough port 35 and one adjacent port 71. The ports 69 and 71 areconnected by a transfer passage similar in construction and function tothe passage 39 of the rotors previously described. The-various flowsobtained by employment of the plate of Fig. 10 in conjunction with thebody of Fig. 9, are as follows. For softening, the position of the valveplate 32 is the same as shown in Figs. l and 2 of the drawings, so thatwater flows from the interior of the cover through ports 35 and 21 tothe softening tank and back through ports 23, 71, 69 and 24 to service.The blind portions of the valve plate close the body ports 22, 25 and68. t

For backwashing, the handle is moved through 180 to position B, causingflow of water from the interior of the cover through ports 35 and 23 tothe bottom of the tank, through the water treating material, and backthrough ports 21, 71, passage 39 and ports 69 and 22 to the side chamber13 and to drain. The blind portions of the valve plate close body ports24, 25 and 68.

For regenerating and rinse the plate is moved through an additional 120to position C and water is then delivered from the interior of the coverthrough ports 35 and 25 to the softening tank, and returns through ports23, 69, transfer passage 39, port 71 and port 68 [27] to the side ordrain chamber 13 to waste. The blind portions of the valve plate closebody ports 21, 22 and 24. To return the valve to service position theplate is then lifted and rotated through a further 60. It will beobserved that this type of plate and body havingsix open ports,

is preferable in some respects to valve s employing plates of the typesdisclosed in Figs. 3 and 4, particularly in the larger size for heavyduty industrial use where flow to service is not wanted duringregeneration.

It should be apparent from the foregoing that I have provided a valve ofsimple construction which is well balanced and adapted to snugly seatand provide a leakproof seal around all of the ports. Any of a pluralityof valves may be made from one set of patterns by simple changes in themanner of finishing the ports. Furthermore, the body portsbeing spaced60 from the adjacent port and concentrically arranged, provide a plainerand better seating support for the plate, obviate tilting and leakingtendencies, and permit the different forms of the valve to be made fromthe same patterns.

In addition I have provided in a single valve a novel brine injectorarrangement and wherein brine is supplied to the header chamber of thesoftened tank and a small flow of water is simultaneously maintained tothe.top of the tank in a single valve operation.

The valve herein shown and described as exemplifying the principles ofmy invention is of the lift-turn type, but it should be understood thatsome, at least, of the-novel features of the invention are adaptable tovalves of the pure rotary type in which the plate remains constantly inengagement with the body. The structural details illustrated anddescribed may obviously be varied within considerable limits withoutexceeding the scope of my invention as defined in the following claims.

I claim:

1. A valve comprising a body having a top chamber, a bottom chamber, twoside chambers [and an injector chamber], each of said chambers beingprovided with an opening for connection with a pipe, and an injectorchamber, said body having a face provided with ports arranged 60 from anadjacent port, each of said ports communicating with at least one ofsaid chambers, said body also having a reagent chamber provided with aninlet [a pipe] connection, [and] a passage of smaller cross-sectionalarea than said ports connecting said injector chamber with said topchamber, an injector nozzle disposed between said injector chamber andsaid reagent chamber to deliver water from the injector chamber into adischarge connection from the reagent chamber [into the pipe connectionof the reagent chamber] and thereby withdraw reagent from the latter,avalve plate arranged in confronting relation to said face of said body,a cover secured to said body and enclosing said valve plate, means forintroducing fluid underpressure into said cover, means on said valveplate providing enclosed transfer passage means,

said valve plate having through port means extending completelytherethrough, open ports extending into said transfer passage means, andblind portion means, the ports of said body and valve plate being formedupon substantially equal radii, said valve plate being movable into aplurality of operative positions including a first position in whichsaid open through port means establishes communication between theinterior of said cover and said top chamber, said. transfer passagemeans inter- I connects said bottom chamber and one of said sidechambers and said blind portion means closes communication to the otherof said side chambers, and another position in which said open throughport means establishes communication between the interior of said coverand said injector chamber to deliver water to the injector chamber forpassage to the nozzle and the top chamber [the 'top chamber and to thenozzle], said transfer passage means interconnects said bottom chamberand the other of said side chamber and said blind portion means'closes aport communicating with said top chamber.

2. A base exchange water treating system including a treatment tankhaving a head space, a control valve, and conduits connecting saidcontrol valve with said treatment tank, said control valve comprising[In a control valve for water treatment apparatus, the combination of] abody provided with a series of ports arranged in a circle each spaced 60from an adjacent port, the body being formed to provide [a] an injectorchamber communicating with one of said ports, a nonle in the wall ofsaid chamber alignedwith said port and a connection to receive thedischarge from said nozzle, [said connection being adapted to be incommunication with the head space of a treatment tank,] a reagent supplypassage adapted to deliver reagent to said connection under theinfluence of the discharge from said nozzle, a conduit leading from saiddischarge connection to the head space of the treatment tank, and aseparate connection from said injector chamber to said head space of thetreatment tank [and said chamber being provided with a passage adaptedfor connection to said head space to supply water thereto above thereagent delivered from said connection] discharging into said head spaceat a point above the discharge from said discharge connection.

3. A valve of the rotatable type, comprising a body having six equallyspaced apart port locations arranged in a circle concentric with thebody, five of said locations being provided with ports and the remaininglocation being provided with a false port, a plate supporting seatdisposed in each of said locations, connections leading from said portlocations adapted to communicate-with the various fluid flow conduits ofa water treating system, a valve plate adapted to rest upon said seats,said plate being provided with a port extending therethrough and withdownwardly opening ports connected by a passage, and means for rotatingsaid plate to establish fluid flows for normal service of a watertreating system and in other positions to establish flows forreconditioning the the remaining area being provided with a false port,each of said areas being equipped with a plate supporting sealing ring,a valve plate having multiple ports arranged to register with said bodyports, two of said plate ports being adapted to conduct raw water fromabove the plate to aligned body ports and the remaining three plateports opening downwardly from the plate only and connected together by apassage, a stem upon which said plate is mounted, and means foractuating said stem to align the plate ports with the requisite bodyports for establishing flows to produce service, backwash andregeneration steps.

5. A multiport valve of the rotatable type comprising a body having sixequally spaced apart port locations arranged in a circle, five of saidlocations having open ports and the remaining location having a falseport, a plate supporting seat disposed in each of said locationssurroundingsaid ports, said port locations comprising a top portlocation having an open port, a drain port location having an open portat v60" with respect to the top port, a drain port location having afalse port at I20 with respect to the top port, a bottom port locationhaving an open port at 180 with respect to the top port, a service portlocation having an open port at 240 with respect'to the top port, and areagent port location having an open port at 300 with respect to the topport, a valve plate adapted to rest upon said seats, said plate havingaport extending therethrough positioned to register with the top port ina service position of the plate, a second port extending completelytherethrough positioned to register with the reagent port in saidservice position and three downwardly opening ports connected by apassage, one of the three ports being positioned for registration withthe false port, another of the three ports registering with the bottom'port and the other of the three ports registering with the service portin said service position, and means for rotating the plate throughsuccessive angular-ities of 240, 60 and 60' to move the plate portsthrough backwash, regenerating and service positions with respect to thebody.

6. An article of manufacture comprising a castmetal valve body having aface provided with six port locations equidistantly spaced in a circleat 60 intervals around a common center, a plate supporting seat ofresilient material disposed in each of said locations, flow connectionsleading to said locations, said port locations comprising a top portlocation, drain port locations dis posed at 60 and respectively withrespect to the top port location, a bottom port location at with respectto the top port location, a service port location at 240 with respect tothe top port location and a reagent supply port location at 300' withrespect to the top port location, and an injector carried on the body incommunication with the reagent port location, said body having a smallpassage connecting the reagent port location and the top port location.

7. A control valve for controlling the flows of a base exchange watertreatment apparatus, including a body and a plate cooperable therewith,said body being formed to provide a plurality of ports arranged in acircle each spaced 60" from an adjacent port, a pair of chamberscomprising first and second chambers aligned with one of said ports, anozzle between said chambers in alignmentwith said one port and adischarge connection leading from the second chamber in alignment withsaid nozzle [arranged for connection to the head space of a treatmenttank of said apparatus], said first chamber being connected by a passagein the body with an adjacent sport of the body, and said second chamberbeing adapted for connection to a supply of regenerating material.

8. A base exchange water treating system including a treatment tankhaving a head space, a control valve, and conduits connecting saidcontrol valve with said treatment tank, said control valve [A flowcontrol valve for base exchange water treating system,] comprising aported body and a ported plate cooperable therewith, [said body beingadapted for connection to the various conduits of such system], the bodybeing formed with a chamber communicating with one of said body ports, apassage between said chamber and an adjacent port of the body, saidadjacent part being connected-through one of said conduits to the headspace of the treatment tank [said adjacent port being adapted forconnection to the head space of the treatment tank of said system,] anoule leading from said chamber in alignment with the firstmentioned oneof said ports, a discharge connection in spaced alignment with saidnozzle and connected by another of said conduits with the head space ofthe treatment tank [and adapted to be connected with the head space ofthe treatment tank] at a point below the point of connection of theaforesaid adjacent port, and a passage for supplying reagent to thespace between the nozzle and the discharge connection.

9. A valve comprising a body having a top chamber, a bottom chamber, twoside chambers, a reagent chamber and an injector chamber, each of saidchambers being provided with an opening for connection with a pipe, saidbody having a face provided with ports arranged 60 from an adjacentport, each of said ports communicating with at least one of saidchambers, said body also having an injector chamber provided with aninlet connection, a passage of smaller cross-sectional area than saidports connecting said injector chamber with said top chamber, aninjector tube leading from the reagent chamber, an injector nozzledisposed between said injector chamber and said reagent chamber todeliver water from the injector chamber into said tube and therebywith-i draw reagent from the latter, a valve plate arranged inconfronting relation to said face of said body, a cover secured to saidbody and enclosing said valve plate, means for introducing fluid underpressure into said cover, means on said valve plate providing enclosedtransfer passage means, said valve plate having through port meansextending completely therethrough, open ports extending into saidtransfer passage means, and blind portion means, the ports of said bodyand valve plate being formed upon substantially equal radii, said valveplate being movable into a plurality of operative positions including afirst position in which said open through port means establishescommunication between the interior of said cover and said top chamber,said transfer passage means interconnects said bottom chamber and one ofsaid side chantbers and said blind portion means closes communication tothe other of said side chambers, and another position in which said openthrough port means establishes communication between the interior ofsaid cover and said injector chamber to deliver water to the injectorchamber for passage to the nozzle and the top chamber, said transferpassage means interconnects said bottom chamber and the other of saidside chamber and said blind portion means closes a port communicatingwith said top chamber.

10. A lift turn multiple port type valve comprising a cast metal valvebody having a face provided with six port locations equidistantly spacedin a circle at intervals around a common center, a plate supporting seatof resilient material disposed in each of said locations, flowconnections leading to said locations, said port locations comprising atop port location, drain port locations disposed at 60 and respectivelywith respect to the top port location, a bottom part location at withrespect to the top port location, locations for a service port and areagent supply port, one being at 240 and the other at 300 with respectto said top part location, and an injector carried by the body incommunication with the reagent port location, said body having a passageconnecting the reagent port location and the top port location.

11. A lift turn multiple port type valve comprising a cast metal valvebody having a face provided with six port locations equidistantly spacedin a circle at- 60 intervals around a common center, a plate supportingseat of resilient material disposed in each of said locations, flowconnections leading to said locations, said port locations comprising atop part location, drain port locations disposed at 60 and 120respectively with respect to the top port location, a bottom portlocation at 180 with respect to the top port location, a service portlocation and a reagent supply port location, one of the latter twolocations being at 240 and the other at 300 with respect to the top portlocation, and an injector carried by the body in communication with thereagent port location, said body having a passage connecting the reagentport location and the top port location.

References Cited in the file of this patent or the original patentUNITED STATES PATENTS 2,051,155 Stagemen Aug. 18,1936 2,209,993 McGillAug. 6, 1940 2,235,287 Daniels Mar. 18, I94! 2,299,802 Daniels Oct. 27,I942 2,364,697 Daniels Dec. 12, I944 2,451,678 Johnson et al. Oct. 19,1948

